A Database of Drosophila Genes & Genomes

FB2008_07, released August 8, 2008
 

Allele Dmel\sggM11

General Information
SymbolDmel\sggM11SpeciesD. melanogaster
NameFlyBase IDFBal0032709
Feature typealleleCreated / Updated2006-08-22/2006-08-22
Associated geneDmel\sgg
Allele classamorph, loss of function
Mutagenspontaneous
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Allele class
Mutagen
Mapped Features and Mutations
Type
Symbol & Location
Additional Notes
References
 
 
 
 
Associated Sequence Data
DDBJ /
EMBL /
GenBank
DNA sequence
Protein sequence
Name
 
UniProtKB/Swiss-Prot
    UniProtKB/TrEMBL
      Progenitor genotype
      Nature of the lesion
      Statement
      Reference
       
       
      Assay mode
      Cytology
      hide Phenotypic Data
      hide Phenotypic Class
      hide Phenotype Manifest In
      larval brain & embryo | germ-line clone | maternal effect
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      Statement
      Reference
      Mutant clones generated via Scer\GAL4en-e16E and Scer\FLP1Scer\UAS.cDa acting on P{FRT(whs)}101 show ectopic bristles limited to the posterior compartment.
      Mutant embryos show abnormal guts.
      Hemizygous progeny derived from heterozygous females die during early larval stages. All embryos derived from homozygous germline clones die during embryonic development, and have very poorly differentiated cuticle which sometimes has holes in it. The head is defective, with abnormal spiracles, and the filzkorper material is very prominent. The CNS is very disorganised and the brain often protrudes dorsally rather than being covered by epidermis. The PNS is abnormal. Some embryos have a less extreme phenotype, with more cuticle differentiation and some defective denticle belt differentiation. The phenotype can be partially rescued by a paternal copy of wild-type sgg. Homozygous clones in the wing show homeotic transformation of hairs into bristles.
      Mutants embryos lacking both maternal and zygotic gene product completely lack ventral denticles: en expression is expanded and there is a strong ectopic wg stripe of expression. Embryos lacking only maternal component have some ventral denticles: en expression is identical to that in the "null" embryos but the ectopic wg stripes are sparse.
      Homozygous clones in the wing generally contain dense aggregations of bristles, the type of bristle depending on the location of the clone. The spacing of the normal campaniform sensilla is disrupted if the clone is near the normal location of the sensilla. Ectopic veins are sometimes formed.
      Embryos lacking both maternal and zygotic sgg and arm function have an embryonic cuticle phenotype like that of arm mutant embryos alone. Embryos lacking maternal sgg and arm but receiving wild type paternal copies develop into normal embryos that survive until adulthood. Embryos lacking maternal sgg and arm but receiving a wild type paternal copy of arm+ only, show a sgg naked cuticle phenotype.
      Embryos derived from homozygous mutant germ lines, receiving neither maternal or zygotic wild type product, lack denticles on the ventral cuticle.
      Clones of sgg in the wing blade autonomously differentiate tufts of bristles characteristic of the wing margin. Clones of cells simultaneously mutant for both dsh and sgg do not produce a dsh mutant phenotype at the wing margin, but display the phenotype of cells mutant for sgg alone.
      Clones induced during the late second larval instar give rise to fully ventralized dorsal bristles in both anterior and posterior compartments.
      More than wild type numbers of invagination folds in the stomodeal invagination are observed.
      Flies lacking both maternal and zygotic sgg have completely naked cuticles, regardless of the dose of ci.
      Clones double mutant for sggM11 and Df(3R)Espl22 in the anterior wing differentiate anterior bristles (as for clones of sggM11 single mutants), however double mutant clones in the posterior compartment differentiate hairs typical of the posterior wing margin.
      Virtually all ventral denticle belts of the embryo are replaced with naked cuticle.
      In paternally rescued embryos the gut constrictions are highly abnormal, all three are condensed and folded up into one giant constriction. Malpighian tubule growth is precociously initiated. Homozygous embryos also exhibit precocious development, but are severely misshapen so morphological analysis is difficult.
      Embryos show severe segmentation defects but no increase (but rather a moderate decrease) in heart precursor formation.
      No effect on the faf eye phenotype.
      Homozygous clones induced in the eye produce scars. Outside the scarred area, ommatidial chirality is inverted on the polar side of the clone. This phenotype is unchanged if the clone is also homozygous for wgl-17.
      Embryos zygotically and maternally mutant for sggM11 show reduction in the number of heart precursors. sggM11 dsh75 double mutant embryos have the same phenotype as sggM11 single mutant embryos.
      Females with homozygous germ line clones, mated to wild-type males, give rise to 2 classes of embryos: null sggM11/Y embryos (lacking both maternal and zygotic sgg function) which have a completely naked cuticle and paternally rescued sggM11/+ embryos (lacking maternal sgg function) which have sparse denticles. These phenotypes are rescued to an almost wild-type denticle pattern by sggScer\UAS.cSa expressed under the control of Scer\GAL469B.
      Embryos do not form ventral denticles.
      slou-expressing muscles are often absent in embryos derived from homozygous germline clones.
      In embryos derived from germ line clones, the anterior midgut construction is obliterated. Phenotype is similar to that caused by Apc2 RNAi mutants.
      Homozygous sggM11 or sgg32/sggM11 adults (that have been rescued to adulthood by the addition of sgghs.P coupled with larval and pupal heatshocks), show a lengthening of the locomotor activity rhythm periodicity to about 26 hours.
      Homozygous clones in the wing show transformations of wing blade to wing margin tissue.
      Mutant stage 17 embryos do not show significant defects in the location or formation of the tracheal dorsal trunk branch, dorsal branch 10, spiracular branch 10 or the posterior spiracle.
      Extra Malpighian tubule cells are specified in sggM11 embryos dervied from sggM11 germ-line clones.
      No denticle are present in the cuticles made by embryos maternally and zygotically mutant for sggM11.
      sgg[M11] mutant wing blade clones exhibit thin mechanosensory bristles. Ectopic bristles can be generated anywhere on the wing blade by sgg[M11] mutant clones.
      hide Interactions
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      hideEnhancer of
      Statement
      Reference
      sggM11/sgg[+] is an enhancer of visible phenotype of Scer\GAL4en-e16E, armScer\UAS.cWa
      hideNOT Enhancer of
      Statement
      Reference
      sggM11 is a non-enhancer of visible phenotype of Scer\GAL4bbg-C96, mamN.Scer\UAS
      hideSuppressor of
      Statement
      Reference
      sggM11/sgg[+] is a suppressor of visible phenotype of Scer\GAL4en-e16E, armScer\UAS.cWa
      hideNOT Suppressor of
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      Statement
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      Statement
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      sggM11 is an enhancer of larval midgut & embryo phenotype of nej3
      hideNOT Enhancer of
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      hideSuppressor of
      Statement
      Reference
      sggM11/sgg[+] is a suppressor of scutum & macrochaeta phenotype of Scer\GAL4ap-md544, nmoc5-1.Scer\UAS
      sggM11 is a suppressor | somatic clone of proneural cluster & dorsal mesothoracic disc phenotype of NECNΔ10-12.Scer\UAS, Scer\GAL4ptc-559.1
      hideNOT Suppressor of
      Statement
      Reference
      sggM11 is a non-suppressor of denticle | germ-line clone | ectopic phenotype of arm2
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      Statement
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      Statement
      Reference
      Suppresses wing margin phenotype of fzScer\UAS.N, Scer\GAL469B.
      Embryos doubly mutant for sggM11 and dsh3 or porPB16 also lack denticles on the ventral cuticle. Embryos doubly mutant for sggM11 and arm8 display the ventral cuticle covered with denticles.
      Double mutants for sggM11 and nej3 show a worse gut phenotype than do nej3 single mutants.
      The sggM11 lack of denticles phenotype is not affected by injection of both dsRNA produced by annealing fz374-2360 and fza.374-2360 RNA and dsRNA produced by annealing fz2L.cKa and fz2a.L.cKa RNA.
      Has no effect on the wing nicking phenotype seen in mamN.Scer\UAS, Scer\GAL4C96 flies.
      sggM11 somatic clones, in a NECNΔ10-12.Scer\UAS/Scer\GAL4ptc-559.1 background, suppress the loss of proneural precursors and sensory organ phenotypes normally seen in these flies.
      Pka-C1E95, sggM11 smo3 triple mutant clones in the wing disc exhibit some outgrowths from the notum but no significant wing pattern duplications.
      lgs20F, sggM11 homozygous mutant germ-line clones can made by rescuing homozygous mothers with P{αTub84B(FRT.lgs.sgg)Scer\GAL4.B} and FLPing out sggmR10 and lgsαTub84B.PK (Which are surrounded by FRT sites). When this is done, the phenotype of the animals is indistinguishable from lgs20F germ-line clones.
      The loss of denticle belts in the cuticle made by sggM11/sggM11 maternal/zygotic mutant embryos, is suppressed by maternal/zygotic armF1α/armF1α (a weaker suppression is seen when arm8 is used instead). When these double mutant embryos are also zygotically mutant for wgl-8, they make little naked cuticle, a phenotype approximating to that seen in wgl-8 mutants. The appearance of the denticle lawn in these embryos is noticeably different to that seen in maternal/zygotic armF1α/armF1α embryos zygotically mutant for wgl-8. The denticle belts formed in sggM11; armF1α maternal/zygotic double mutant embryos are largely suppressed by AxnS044230/AxnS044230, leaving mainly naked cuticle without much sign of periodic character. The periodic character of the cuticles made by sggM11; arm8 maternal/zygotic double mutant embryos is suppressed by arr2/arr2, with the resulting cuticle tending toward denticle cell fates.
      The addition of sggM11 has no effect on the arm2 embryonic phenotype. However the combination of arm2, armS8 and sggM11 leads to embryos with naked cuticle.
      Notching of the distal wing margin in nmoc5-1.Scer\UAS; Scer\GAL4sd-SG29.1 flies is completely suppressed by sggM11/+. Loss of notum macrochaetae in nmoc5-1.Scer\UAS; Scer\GAL4ap-md544 flies is suppressed by sggM11/+ and enhanced by AxnA2.Scer\UAS, leading to the loss of all scutellar bristles. Severe blistering of the wing in nmoc5-1.Scer\UAS; Scer\GAL4ap-md544 flies is suppressed by sggM11/+, resulting in almost wild-type wings.
      Unlike embryos from dsh3 germline clones, embryos from dsh3; sggM11 germ-line clones have no dorsal hole in their cuticles (although their dorsal cuticle is severely puckered), and have a dorso-ventrally polarised and extended leading edge at stage 13.
      hide Xenogenetic Interactions
      Statement
      Reference
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      Rescued by
      Partially rescued by
      Comments
      sggmR10 rescues hemizygous males to viable and (poorly) fertile adults.
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      hide Synonyms & Secondary IDs ( 12 )
      Reported As
      Symbol Synonym
      sgg33
       
      sggM11
       
      sgg<up>zw3 M11-1</up>
      Name Synonym
      Secondary FlyBase IDs
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